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1. 发明申请

US20200217419A1 SEAL RING 审中-公开
公开(公告)号：US20200217419A1
公开(公告)日：2020-07-09
申请号：US16825152
申请日：2020-03-20
申请人： NOK CORPORATION
发明人： Masatoshi SEKI , Hideya WATANABE
IPC分类号： F16J15/3284
摘要： A recessed part formed on a side surface includes a dynamic pressure part extending in the circumferential direction to converge on the side surface, and an introduction part extending from the dynamic pressure to open the dynamic pressure part toward the inner periphery side. One or two inner peripheral wall parts are provided for each of the recessed parts. The inner peripheral wall part is a portion defined on the inner periphery side of the corresponding recessed part by the dynamic pressure part and the introduction part. The inner peripheral wall part includes an inner peripheral wall surface. The inner peripheral wall surface extends toward the introduction part in the circumferential direction with inclining with respect to the side surface such that the inner peripheral wall surface is depressed from the side surface.

2. 发明申请

US20220243819A1 SEAL RING 有权
公开(公告)号：US20220243819A1
公开(公告)日：2022-08-04
申请号：US17623715
申请日：2020-05-13
申请人： NOK CORPORATION
发明人： Hideya WATANABE , Yusuke YOSHIDA
IPC分类号： F16J15/18 , F16J15/3272
摘要： A circular annular seal ring made from a resin is adapted to be disposed between an outer member and an inner member that rotate relative to each other. The seal ring is disposed in a circumferential groove of the outer member or the inner member to isolate a liquid space from an external space. The seal ring is formed from an elongated and arcuate rod to define a circle by joining ends of the rod, and has a junction formed from the ends. The seal ring has a radial thickness gradually decreasing from two points that are apart from the junction toward the junction. The points are separated from the junction by an angle of not less than 60 degrees and not more than 150 degrees about a central axis of the circle.

3. 发明申请

US20150240948A1 Seal Ring 有权
标题翻译：密封环
公开(公告)号：US20150240948A1
公开(公告)日：2015-08-27
申请号：US14620708
申请日：2015-02-12
申请人： NOK CORPORATION
发明人： Hideya WATANABE
IPC分类号： F16J15/16 , F16J15/34
CPC分类号： F16J15/164 , F01D11/00 , F01D11/003 , F01D11/006 , F16J15/34 , F16J15/441 , F16J15/442
摘要： A seal ring 100 is configured by the combination of a first divided body 100A on a high pressure side and a second divided body 100B on a low pressure side with respect to an axis direction. The seal ring that stabilizes sealing performance while reducing rotary torque and including a recessed section 140 provided centrally in a width direction and extending in a circumferential direction and a pair of raised sections 150 provided on both sides of the recessed section 140. A through hole 141 a is provided so as to lead to a bottom surface of the recessed section 140 from an inner peripheral surface side and allows a sealed fluid to be introduced into the recessed section 140 from the inner peripheral surface side.
摘要翻译：密封环100通过高压侧的第一分割体100A和相对于轴方向的低压侧的第二分割体100B的组合构成。该密封环在减小旋转力矩的同时稳定密封性能，并且包括设置在凹部140的两侧的宽度方向中央并沿周向延伸的一对凸起部150的通孔141 a设置成从内周面侧导入凹部140的底面，并且允许密封流体从内周面侧引入凹部140。

4. 发明公开

US20240288074A1 SEALING RING AND SEALED STRUCTURE INCLUDING SAME 审中-公开
公开(公告)号：US20240288074A1
公开(公告)日：2024-08-29
申请号：US18572083
申请日：2022-04-08
申请人： NOK CORPORATION
发明人： Hideya WATANABE
IPC分类号： F16J15/32
CPC分类号： F16J15/32
摘要： A sealed structure includes: a shaft; a member having a hole for the shaft; and a sealing ring sealing a gap between the shaft and the member. The shaft has a circular ring groove centered around the central axis of the shaft. The bottom surface of the groove has a recess. The sealing ring has a protrusion protruding toward the central axis. The protrusion fits into the recess. When the shaft rotates, an end face X of the protrusion and an end face Y of the recess contact each other to push the sealing ring radially outward. An angle α of a straight line representing the end face X relative to the radial direction of the sealing ring and an angle δ of a straight line representing the end face Y relative to the radial direction of the shaft are both at least 45 degrees.

5. 发明公开

US20240263703A1 Seal Ring 审中-公开
公开(公告)号：US20240263703A1
公开(公告)日：2024-08-08
申请号：US18633944
申请日：2024-04-12
申请人： NOK CORPORATION
发明人： Hideya WATANABE , Yusuke YOSHIDA
IPC分类号： F16J15/18 , F16J15/10 , F16J15/16 , F16J15/3272
CPC分类号： F16J15/18 , F16J15/3272 , F16J15/104 , F16J15/164
摘要： A circular annular seal ring made from a resin is adapted to be disposed between an outer member and an inner member that rotate relative to each other. The seal ring is disposed in a circumferential groove of the outer member or the inner member to isolate a liquid space from an external space. The seal ring is formed from an elongated and arcuate rod to define a circle by joining ends of the rod, and has a junction formed from the ends. The seal ring has a radial thickness gradually decreasing from two points that are apart from the junction toward the junction. The points are separated from the junction by an angle of not less than 60 degrees and not more than 150 degrees about a central axis of the circle.

6. 发明公开

US20230272858A1 SEALING STRUCTURE 审中-公开
公开(公告)号：US20230272858A1
公开(公告)日：2023-08-31
申请号：US17923950
申请日：2021-06-07
申请人： NOK CORPORATION
发明人： Makoto HATANO , Hideya WATANABE , Masatoshi SEKI
IPC分类号： F16J15/3272
CPC分类号： F16J15/3272
摘要： A sealing structure is provided to suppress the generation of a space between an inner peripheral surface of a shaft hole and an outer peripheral surface of a seal ring. The sealing structure is a sealing device to seal an annular space between a shaft and a shaft hole into which the shaft is inserted. The sealing structure includes an annular seal ring around an axis line x attached to a groove of the shaft, and a locked portion formed on a bottom surface of the groove of the shaft. The seal ring has a locking portion formed on an inner peripheral surface. The locking portion and the locked portion are formed so as to be lockable with each other and formed such that the seal ring is pressed toward an outer periphery side when the locking portion and the locked portion are locked with each other.

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